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V125BC [204]
3 years ago
10

This is complicated- what is 3x + (-2x)?

Mathematics
2 answers:
allochka39001 [22]3 years ago
6 0
3x + (-2x) would be just subtracting 2x from 3x, so it would be 1x or x. Hope this helped<3
yawa3891 [41]3 years ago
4 0
3x+(-2x)
3x-2x
1x or x

Final answer: x
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a set B consists of all natural numbers (counting numbers) less than or equal to 100. Use set-builder notation to define B.
Arada [10]

Answer:  The required set-builder notation is :

B=\{x:x\epsilon \mathbb{N},x\leq 100\}.

Step-by-step explanation:  We are given to write the following set B in set-builder form :

the set B consists of all natural numbers less than or equal to 100.

In set-builder form, a variable x is used to represent each and every element of the set.

Therefore, the set B in set-builder form can be written as :

B=\{x:x\epsilon \mathbb{N},x\leq 100\}.

Thus, the required set-builder notation is :

B=\{x:x\epsilon \mathbb{N},x\leq 100\}.

3 0
4 years ago
Read 2 more answers
An iPod uses a standard 1.7 volt battery. How much resistance is in the circuit if it uses a current of
weeeeeb [17]

Answer:

R = 56.6 ohms

Step-by-step explanation:

Given that,

The voltage of the battery, V = 1.7 volt

We need to find the resistance in the circuit if it uses a current of 0.03 A.

Let the resistance be R. It can be solved using Ohms law as follows :

V = IR

R=\dfrac{V}{I}\\\\R=\dfrac{1.7}{0.03}\\R=56.6\ \Omega

So, the resistance in the circuit is 56.6 ohms.

7 0
3 years ago
How do i graph the equation -x + 2y = 2
Black_prince [1.1K]
<h2>Greetings!</h2>

Step-by-step explanation:

Firstly, set the x value as 0:

-0 + 2y = 2

2y = 2

y = 1

So when x = 0, y = 1

Now set y to 0:

-x + 2(0) = 2

-x = 2

x = -2

So when y = 0, x = -2

Simply plot the two following points:

(0 , 1) and (-2 , 0)

And don't forget to join these two points up!

Attatched is an image of this graph.


<h2>Hope this helps!</h2>

4 0
4 years ago
The frequency of vibration of a piano string varies directly as the square root of the tension on the string and inversely as th
artcher [175]

Answer:

  about 409.946 Hz

Step-by-step explanation:

The multiplier of frequency is (√(tension multiplier))/(length multiplier), so is ...

  (√1.25)/1.2 = (5/12)√5 ≈ 0.931695

So, the longer, tighter string will have the lower frequency of about ...

  0.931695×440 Hz ≈ 409.946 Hz

8 0
3 years ago
Please help!!! The cost of a car rental is $30 per day plus 23¢ per mile. You are on a daily budget of $76. Write and
Sergeeva-Olga [200]

Answer:

30+.23x=76

.23x=76-30

.23x=46

x=46/.23

x=200 miles is the mileage limit for $200.

Step-by-step explanation:

hope it helps

5 0
3 years ago
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